Characterization of ZnGa2O4: Mn2+ nanophosphor synthesized by the solvothermal method in 1,4-butanediol-water system
Characterization of ZnGa2O4: Mn2+ nanophosphor synthesized by the solvothermal method in 1,4-butanediol-water system
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DOI：
10.1016/j.jpcs.2008.10.014
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发表时间：
2009-02
影响因子：
4
通讯作者：
Masahiro Takesada;M. Osada;T. Isobe
中科院分区：
文献类型：
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作者：
Masahiro Takesada;M. Osada;T. Isobe
We characterized ZnGa2O4:Mn2+(ZnGa2O4—zinc gallate) nanophosphor synthesized by the solvothermal method in 1,4-butanediol-containing water to increase the amount of Mn2+ions incorporated in the ZnGa2O4matrix without post-heat treatment. We investigated the influence of water content in the solvent on the photoluminescence (PL) intensity and the Mn amount, the latter being measured by X-ray fluorescence analysis and electron paramagnetic resonance spectroscopy. The PL intensity per Mn amount reached the maximum at the 50wt% water content. The addition of water promotes repeated dissolution and precipitation, resulting in homogeneous Mn2+distribution in the ZnGa2O4matrix. This suggests that the solvothermal method in the 1,4-butanediol–water system is useful for increasing the amount of Mn2+ions incorporated in the ZnGa2O4matrix without post-heat treatment. At the water content >50wt%, the decrease in PL intensity is attributed to the optical absorption of the by-product, MnOOH.
